StorageFile.CopyAsync Méthode

public:
 virtual IAsyncOperation<StorageFile ^> ^ CopyAsync(IStorageFolder ^ destinationFolder) = CopyAsync;

/// [Windows.Foundation.Metadata.Overload("CopyOverloadDefaultNameAndOptions")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<StorageFile> CopyAsync(IStorageFolder const& destinationFolder);

[Windows.Foundation.Metadata.Overload("CopyOverloadDefaultNameAndOptions")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<StorageFile> CopyAsync(IStorageFolder destinationFolder);

function copyAsync(destinationFolder)

Public Function CopyAsync (destinationFolder As IStorageFolder) As IAsyncOperation(Of StorageFile)

Paramètres

Retours

Une fois cette méthode terminée, elle retourne un StorageFile qui représente la copie du fichier créé dans le destinationFolder.

Implémente

Attributs

OverloadAttribute RemoteAsyncAttribute

Exceptions

Exemples

L’exemple suivant copie un fichier dans le dossier spécifié et renomme la copie en appelant la méthode CopyAsync(IStorageFolder, String, NameCollisionOption). Cet exemple spécifie explicitement une valeur pour l’option qui remplace le fichier dans le dossier de destination si un fichier portant le nom spécifié existe déjà.

using Windows.Storage;
using System.Threading.Tasks;

// Get the app's temporary folder.
StorageFolder tempFolder = ApplicationData.Current.TemporaryFolder;

// Create a sample file in the temporary folder.
string newFileName = "test.txt";
StorageFile newFile = await tempFolder.CreateFileAsync(newFileName);

// Get the app's local folder to use as the destination folder.
StorageFolder localFolder = ApplicationData.Current.LocalFolder;

// Specify a new name for the copied file.
string renamedFileName = "renamed_test.txt";

// Copy the file to the destination folder and rename it.
// Replace the existing file if the file already exists.
StorageFile copiedFile = await newFile.CopyAsync(localFolder, renamedFileName, NameCollisionOption.ReplaceExisting);

IAsyncAction MainPage::CopyFileAsync()
{
    // Get the app's temporary folder.
    StorageFolder sourceFolder{ ApplicationData::Current().TemporaryFolder() };
    StorageFolder targetFolder{ ApplicationData::Current().LocalFolder() };

    // Choose source file name and new name for the copied file.
    std::wstring newFileName{ L"test.txt" };
    std::wstring copyFileName{ L"renamed_test.txt" };

    // Create a sample file in the temporary folder.
    StorageFile sourceFile{ co_await sourceFolder.CreateFileAsync(newFileName, Windows::Storage::CreationCollisionOption::ReplaceExisting) };
    // Overwrite any existing file with the same name.
    StorageFile copiedFile{ co_await sourceFile.CopyAsync(targetFolder, copyFileName, Windows::Storage::NameCollisionOption::ReplaceExisting) };
    // Do something with copied file.
}

//Get the app's temporary folder
StorageFolder^ sourceFolder = ApplicationData::Current->TemporaryFolder;
StorageFolder^ targetFolder = ApplicationData::Current->LocalFolder;

// Choose source file name and new name for the copied file
String^ newFileName = "test.txt";
String^ copyFileName = "renamed_test.txt";

//Create a sample file in the temporary folder
auto copyFileTask = create_task(sourceFolder->CreateFileAsync(newFileName, Windows::Storage::CreationCollisionOption::ReplaceExisting)).then
([targetFolder, copyFileName](StorageFile^ sourceFile) -> task<StorageFile^>
{
    //Overwrite any existing file with the same name 
    auto copyFileTask = sourceFile->CopyAsync(targetFolder, copyFileName, Windows::Storage::NameCollisionOption::ReplaceExisting);
    return create_task(copyFileTask);
}).then([](StorageFile^ copiedFile) {
    //do something with copied file
});

Remarques

Cette méthode utilise la valeur FailIfExists de l’énumération CreationCollisionOption par défaut. Autrement dit, cette méthode déclenche une exception si un fichier portant le même nom existe déjà dans le dossier de destination. Si vous souhaitez gérer une collision de nom de fichier d’une autre manière, appelez la méthode surchargée CopyAsync(IStorageFolder, String, NameCollisionOption).

Voir aussi

• CopyAsync(IStorageFolder, String)
• CopyAsync(IStorageFolder, String, NameCollisionOption)

public:
 virtual IAsyncOperation<StorageFile ^> ^ CopyAsync(IStorageFolder ^ destinationFolder, Platform::String ^ desiredNewName) = CopyAsync;

/// [Windows.Foundation.Metadata.Overload("CopyOverloadDefaultOptions")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<StorageFile> CopyAsync(IStorageFolder const& destinationFolder, winrt::hstring const& desiredNewName);

[Windows.Foundation.Metadata.Overload("CopyOverloadDefaultOptions")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<StorageFile> CopyAsync(IStorageFolder destinationFolder, string desiredNewName);

function copyAsync(destinationFolder, desiredNewName)

Public Function CopyAsync (destinationFolder As IStorageFolder, desiredNewName As String) As IAsyncOperation(Of StorageFile)

Paramètres

Retours

Une fois cette méthode terminée, elle retourne un StorageFile qui représente la copie du fichier créé dans le destinationFolder.

Implémente

Attributs

OverloadAttribute RemoteAsyncAttribute

Exceptions

Voir aussi

• CopyAsync(IStorageFolder)
• CopyAsync(IStorageFolder, String, NameCollisionOption)

public:
 virtual IAsyncOperation<StorageFile ^> ^ CopyAsync(IStorageFolder ^ destinationFolder, Platform::String ^ desiredNewName, NameCollisionOption option) = CopyAsync;

/// [Windows.Foundation.Metadata.Overload("CopyOverload")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<StorageFile> CopyAsync(IStorageFolder const& destinationFolder, winrt::hstring const& desiredNewName, NameCollisionOption const& option);

[Windows.Foundation.Metadata.Overload("CopyOverload")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<StorageFile> CopyAsync(IStorageFolder destinationFolder, string desiredNewName, NameCollisionOption option);

function copyAsync(destinationFolder, desiredNewName, option)

Public Function CopyAsync (destinationFolder As IStorageFolder, desiredNewName As String, option As NameCollisionOption) As IAsyncOperation(Of StorageFile)

Paramètres

Retours

Une fois cette méthode terminée, elle retourne un StorageFile qui représente la copie du fichier créé dans le destinationFolder.

Implémente

Attributs

OverloadAttribute RemoteAsyncAttribute

Exceptions

Voir aussi

• CopyAsync(IStorageFolder)
• CopyAsync(IStorageFolder, String)